Synopsis:
The Doctor and Rose visit Jackie and learn that ghosts of loved ones have begun to appear all over the world. Though the world has adapted to their presence, The Doctor, Rose and Jackie eventually piece together that the Torchwood facility is responsible for the ghosts. But the dimensional shifting responsible for the presence of the ghosts is causing the barrier between realities to break down. Add to that a mysterious sphere being held by the Torchwood staff and it seems something strange and substantial looms. When the ghosts reveal themselves to be Cybermen The Doctor knows there's trouble, but when the sphere opens and out comes Daleks, the entire world is suddenly in peril.